Shinu is, albeit, an intriguing character; a half-god and half-demon being. He possesses great power and operates beyond human understanding. Physically, Shinu has a distinct appearance, almost skinless with the shape of a hare's skull but wider and forward-facing. His purple coloration, dark purple eyes, and blazing purple pupils resembling fireballs make him rather visually striking.

Unlike humans, Shinu is not driven by emotions or sentimentality. His actions are guided by a desire to preserve and protect what he considers similar to himself, primarily Markham. While Shinu is not inherently good or evil, he can be mischievous at times and often displays a chill and humorous demeanor. He resides in a true neutral state, often communicating briefly and concisely.

Despite his immense power as an omnipotent spirit, Shinu is not truly omniscient or omnipotent, due to his half-demon side. You could say that Shinu embodies a sort of paradoxical existence. Anything that can potentially destroy gods and eradicate demons can also kill him. Explains why Shinu considers Markham as similar to himself. Though both may have great power, they still have many other weaknesses/vulnerabilities.